Vulnerability Name:

CVE-2021-26036 (CCN-205116)

Assigned:2021-06-08
Published:2021-06-08
Updated:2021-07-09
Summary:An issue was discovered in Joomla! 2.5.0 through 3.9.27. Missing validation of input could lead to a broken usergroups table.
CVSS v3 Severity:7.5 High (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
6.5 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
5.3 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L)
4.6 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Low
CVSS v2 Severity:5.0 Medium (CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial
5.0 Medium (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial
Vulnerability Type:CWE-20
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2021-26036

Source: CCN
Type: Joomla! Developers Web site
Core - DoS through usergroup table manipulation

Source: MISC
Type: Vendor Advisory
https://developer.joomla.org/security-centre/857-20210702-core-dos-through-usergroup-table-manipulation.html

Source: XF
Type: UNKNOWN
joomla-cve202126036-dos(205116)

Vulnerable Configuration:Configuration 1:
  • cpe:/a:joomla:joomla!:*:*:*:*:*:*:*:* (Version >= 2.5.0 and <= 3.9.27)

    • Configuration CCN 1:
  • cpe:/a:joomla:joomla:2.5.0:*:*:*:*:*:*:*
  • OR cpe:/a:joomla:joomla!:3.9.27:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    joomla joomla! *
    joomla joomla 2.5.0
    joomla joomla! 3.9.27